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CAT 349E Excavator Hydraulic System Attachment Smart Boom For Combined Function Electric Control

INTERACTIVE SCHEMATIC
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Information
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Tap Table
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Electrical Symbols
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Bookmarks
X
EC-C3
EC-C2
E-C60
EC-C1
E-C61
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©
2012 Caterpillar, All Rights Reserved
Printed in U.S.A.
UENR0425
March 2012
Smart Boom For Combined Function - Electric Control
349E Excavator
Hydraulic System - Attachment
DGE1-UP
TFG1-UP
KCN1-UP
MZW1-UP
KFX1-UP
MPZ1-UP
COMPONENT LOCATION
Accumulator Gp - Hydraulic (Charged) (Standard)
Accumulator Gp - Hydraulic (Canada BC/AL Reg.)
Control Gp - Joystick (LH)
Control Gp - Joystick (RH)
Cylinder Gp - Boom
Cylinder Gp - Bucket
Cylinder Gp - Stick
Filter and Valve Gp - Pilot (Hydraulic Oil)
Filter Gp - Oil (Hydraulic Return)
Filter Gp - Oil (Hydraulic, Case Drain)
Manifold Gp - Control (Pilot Oil Supply)
Manifold Gp - Solenoid w/Block (Heavy Lift
)
Motor Gp - Swing (LH)
Motor Gp - Swing (RH)
Motor Gp - Trave
l (Left)
Motor Gp - Travel (Right)
Pump Gp - Piston (Main Hydraulic)
Screen Gp - Hydraulic
Sensor Gp - Pressure (Boom Down Ctrl)
Sensor Gp - Pressure (Boom, Rod End)
Sensor Gp - Pressure (Boom Up Ctrl)
Sensor Gp - Pressure (Negative Flow Control)
Sensor Gp - Pressure (Negative Flow Control)
Sensor Gp - Pressure (Overload Warning)
Sensor Gp - Pressur
e (Overload Warning)
S
ensor Gp - Pressure (Stick In Ctrl)
Sensor Gp - Pressure (Stick Out Ctrl)
Sensor Gp - Pressure (Swing Control)
Switch As - Pressure (Implement)
Switch As - Pressure (Left Travel)
Switch As - Pressure (Right Travel)
Swivel Gp
Tank and Filter Gp - Hydraulic
Valve Gp - Check
Valve Gp - Check (Return)
Valve Gp - Crossover Relief (Swing Cushion)
Valve Gp - Pilot Travel (With Shuttle)
Valve Gp
- Pump Control
Valve
Gp - Pressure Reducing (Boom Priority)
Valve Gp - Shuttle
Valve Gp - Stick Drift Reduction
Valve Gp - Travel Counterbalance (Left)
Valve Gp - Travel Counterbalance (Right)
Block Gp
Manifold Gp - Ctrl And Solenoid (Boom/Stick Regeneration)
Plate
Sensor Gp - Pressure (Boom, Head End)
Sensor Gp - Pressure (Squeeze)
Valve Gp - Check (Boom Float Up)
Valve Gp - Load Control (Boom Cylinder LH)
Valve Gp - Load Contro
l (Boom Cylinder RH)
Valve
Gp - Main Control (Heavy Lift)
Valve Gp - Manual (Boom Lower)
Valve Gp - Shuttle
Valve Gp - Solenoid (Work Tool) (4-Function)
Valve Gp - Solenoid and Relief (1-Way, 2-Way Flow)
Valve Gp - Solenoid and Relief
323-7560 43
F-2
335-0223 44 C-13
259-7504 45 G-6
338-6971 46 I-7
338-6971 47 G-4
297-0371 48 G-7
352-7143 49 I-8
352-7143 50 I-6
323-7658 51 D-2
335-0512 52 H-7
8J-6875 53 G-4
259-7429 54 C-11
297-0265 55 G-5
297-0266 56 F-4
Attachment: Smart Boom for Combined Function - Electric Control
Description
Part
Number
Machine
Location
Schematic
Location
349E STANDARD
164-6981
352-6860
335-0511 2
F-14
335-0510 3 F-12
358-8439 4 J-7
358-8482 5 I-4
358-8461 6 I-3
158-8987 7 C-3
188-4145 8 B-3
289-8194 9 B-3
215-5037 10 B-6
323-7895 11 C-14
334-9975 12 H-9
334-9975 13 I-10
335-5669 14 I-14
335-5669 15 I-12
349-4066 16 C-8
326-4434 17 A-3
338-6970 18 D-14
338-6971 19 I-7
338-6970 20 D-13
338-6970 21 A-10
338-6970 22 B-10
338-6971 23 D-5
338-6971 24 D-5
338-6970 25 D-12
338-6970 26 D-13
1 B-4
338-6970 27 D-12
319-4407 28 D-13
319-4407 29 D-11
319-4407 30 D-10
225-4547 31 G-12
330-2497 32 B-4
352-7071 33 F-8
323-7671 34 F-8
295-9422 35 H-10
323-7762 36 E-10
310-0107 37 B-10
148-6218 38 B-12
323-7560 39 E-12
352-7016 40 F-7
266-7843 41 H-14
266-7843 42 H-11
TAP LOCATION
Tap
Number
Description
Schematic
Location
Do Pump Case Pressure C-9
a1 Drive Pump Delivery Pressure C-7
a3 Power Shift Pressure B-7
a2 Idler Pump Delivery Pressure B-7
A2 Drive Pump Negative Flow Pressure (NFC1) B-10
B2 Idler Pump Negative Flow Pressure (NFC2) B-10
PG Pilot Pump Delivery Pressure C-3
SOS Oil Sampling Port C-2
AA bR2, Attachment Extend Pilot Pressure (B1) C-10
BB bF1, Attachment Extend Pilot Pressure (B2) C-10
CC aR2, Attachment Retract Pilot Pressure (B3) C-11
DD aF1, Attachment Retract Pilot Pressure (B4) C-11
EE Boom Regeneration Valve Pressure B-14
FF Boom Pilot Pressure C-12
GG Stick Pilot Pressure C-13
FLUID POWER SYMBOLS
ONE POSITION
TWO POSITION
THREE POSITION
VENTED
PRESSURIZED
RETURN ABOVE FLUID LEVEL
RETURN BELOW FLUID LEVEL
LINES CROSSING LINES JOINING
TWO-WAY
THREE-WAY
FOUR-WAY
SPRING
CONTROL VALVES
RESTRICTION
LINE RESTRICTION
(FIXED)
2-SECTION PUMP
MAIN
AUX.
SPRING
(ADJUSTABLE)
VARIABILITY
LINE RESTRICTION
(VARIABLE)
LINE RESTRICTION
VARIABLE and PRESSURE
COMPENSATED
PRESSURE
COMPENSATION
PUMP: VARIABLE and
PRESSURE COMPENSATED
ENERGY TRIANGLES
HYDRAULIC PNEUMATIC
MEASUREMENT
PRESSURE
TEMPERATURE
FLOW
ROTATING SHAFTS
UNIDIRECTIONAL BIDIRECTIONAL
PUSH-PULL LEVER PEDALGENERAL MANUAL PUSH BUTTON SPRING
MANUAL CONTROL SYMBOLS
HYDRAULIC MOTORS
FIXED
DISPLACEMENT
VARIABLE DISPLACEMENT
NON-COMPENSATED
UNIDIRECTIONAL
BIDIRECTIONAL
HYDRAULIC PUMPS
FLUID STORAGE RESERVOIRS
CROSSING AND JOINING LINES
VALVE ENVELOPES
VALVE PORTS
BASIC COMPONENT SYMBOLS
FLUID CONDITIONER
PUMP or MOTOR
FIXED
DISPLACEMENT
VARIABLE DISPLACEMENT
NON-COMPENSATED
UNIDIRECTIONAL
BIDIRECTIONAL
VALVES
PILOT CONTROL SYMBOLS
RELEASED PRESSURE
EXTERNAL RETURN
INTERNAL RETURN
REMOTE SUPPLY PRESSURE
SIMPLIFIED
COMPLETE
INTERNAL
SUPPLY PRESSURE
ACCUMULATORS
SPRING LOADED GAS CHARGED
SOLENOID
or MANUAL
SOLENOID
and PILOT
SOLENOID and
PILOT or MANUAL
COMBINATION CONTROLS
SOLENOID
SERVO
THERMAL
DETENT
HYDRAULIC AND PNEUMATIC CYLINDERS
DOUBLE ACTINGSINGLE ACTING
BASIC
SYMBOL
SPRING
LOADED
CHECK VALVES
TWO
POSITION
INFINITE
POSITIONING
FLOW IN ONE
DIRECTION
FLOW ALLOWED IN
EITHER DIRECTION
THREE
POSITION
CROSS
FLOW
PARALLEL
FLOW
INTERNAL PASSAGEWAYS
NORMAL POSITION
A B
P T
A B
P T
SHIFTED POSITION
INFINITE POSITION
CONTROL VALVES
ATTACHMENT
MANUAL SHUTOFF
SHUTTLE PILOT
CONTROLLED
ELECTRICAL SYMBOLS
Hydraulic Symbols (Electrical)
325-AG135 PK-14
Circuit Identification
Number
Wire Color
Wire Gauge
Harness identification code
This example indicates
wire 135 in harness "AG".
325-PK-14
Wire Gauge
Wire Color
Circuit Number
Identification
Wire Number Identification Codes
Current Standard
Previous Standard
Electrical Schematic Example
Hydraulic Schematic Example
325-PK
Wire Color
Circuit Number
Identification
B
A
Wire
Wire
(EXAMPLE VALVE)
Current Standard
Transducer
(Fluid)
Transducer
(Gas / Air)
G
Generator
Electrical Wire
Pressure Switch
M
Electric Motor
Pressure Switch
(Adjustable)
Temperature Switch
Pressure
Symbol
Temperature
Symbol
Level
Symbol
Flow
Symbol
Electrical Symbols (Electrical)
T
Components are shown installed on a fully operable machine with the key and engine off, transmission shifter
in neutral and with parking brake set.
Refer to the appropriate Service Manual for Troubleshooting, Specifications and Systems Operations.
ATTACHMENT: SMART BOOM FOR COMBINED FUNCTION - ELECTRIC CONTROL
SCHEMATIC PART NUMBER: 337-8474, CHANGE: 02, VERSION: HE
MEDIA NUMBER: UENR0425
THIS SCHEMATIC IS FOR THE 349E EXCAVATOR HYDRAULIC SYSTEM
A
B
C
D
E
F
12345678
91011121314
G
H
I
J
12345678
91011121314
A
B
C
D
E
F
G
H
I
J
LINE PATTERNS
Drain / Return Lines
Component Group
Pilot / Load Sensing Pressure
Pressure Line
Attachment
Air Line
CALLOUTS
Taps (Pressure, Sampling, Sensor - by letter)
YY
HYDRAULIC CIRCUIT COLOR DESCRIPTIONS
SWING BRAKE CONTROL CIRCUIT
IDLER PUMP OUTPUT
POWERSHIFT CONTROL CIRCUIT
SUPPLY LINE
STICK CONTROL AND STICK CYLINDER CIRCUIT
LEFT TRAVEL CONTROL AND LEFT TRAVEL MOTOR CIRCUIT
ATTACHMENT CIRCUIT
SWING CONTROL AND SWING MOTOR CIRCUIT
DRAIN / RETURN LINE
DRIVE PUMP OUTPUT
TRAVEL SPEED CONTROL CIRCUIT
BUCKET CONTROL AND BUCKET CYLINDER CIRCUIT
RIGHT TRAVEL CONTROL AND RIGHT TRAVEL MOTOR CIRCUIT
BOOM CONTROL AND BOOM CYLINDER CIRCUIT
PILOT PUMP OUTPUT
(30) SWITCH AS
PRESSURE
(RIGHT TRAVEL)
319-4407
(36) VALVE GP
PILOT TRAVEL
(WITH SHUTTLE)
323-7762
(39) VALVE GP
SHUTTLE
323-7560
(15) MOTOR GP
TRAVEL (RIGHT)
355-5669
(41) VALVE GP
TRAVEL
COUNTERBALANCE
(LEFT)
266-7843
(22) SENSOR GP
PRESSURE
(NEGATIVE FLOW CONTROL)
338-6970
(13) MOTOR GP
SWING (RH)
334-9975
(12) MOTOR GP
SWING (LH)
334-9975
(35) VALVE GP
CROSSOVER RELIEF
(SWING CUSION)
295-9422
(2) CONTROL GP
JOYSTICK (LH)
335-0511
(14) MOTOR GP
TRAVEL (LEFT)
355-5669
(3) CONTROL GP
JOYSTICK (RH)
335-0510
(31) SWIVEL GP
225-4547
(17) SCREEN GP
HYDRAULIC
326-4434
(1) ACCUMULATOR GP
HYDRAULIC (CHARGED)
(STD) 164-6981
(CANADA BC/AL REG) 352-6860
ATT LINE 1
RERV
319-4407
(11) MANIFOLD GP
SOLENOID w/BLOCK
(HEAVY LIFT)
323-7895
(55) VALVE GP
SOLENOID AND RELIEF
(1-WAY, 2-WAY FLOW)
297-0265
(56) VALVE GP
SOLENOID AND RELIEF
297-0266
(9) FILTER GP
OIL (HYDRAULIC,
CASE DRAIN)
289-8194
(7) FILTER AND VALVE GP
PILOT (HYDRAULIC OIL)
158-8987
(8) FILTER GP
OIL (HYDRAULIC
RETURN)
188-4145
(32) TANK AND
FILTER GP
HYDRAULIC
330-2497
(10) MANIFOLD GP
CONTROL
(PILOT OIL SUPPLY)
215-5037
(16) PUMP GP
PISTON
(MAIN HYDRAULIC)
349-4066
266-7843
(42) VALVE GP
TRAVEL COUNTERBALANCE
(RIGHT)
EE
GG
FF
DD
CC
BB
AA
Do
a2
a3
A2
B2
SOS
PG
a1
(26) SENSOR GP
PRESSURE
(STICK OUT CTRL)
338-6970
(28) SWITCH AS
PRESSURE
(IMPLEMENT)
PS
PRESS EPRV
CYL
X
Dr
CV
Pi
T
X
T
Pi
CV
Dr
X
CYL
X
A
B
Dr
A
B
Dr
TRAVEL MOTOR (LEFT)
TRAVEL MOTOR (RIGHT)
X
B
A
B
A
AG
AG
BG
BG
T2
T2
T1
T1
BR
BR
X
B
A
L
L
B
A
A
B
MU1
DB1
PG1
A1
B1
SWING MOTOR
AG1
BG1
DE1
A2
B2
MU2
PG2
DB2
DE2
AG2
BG2
SWING MOTOR
DRAIN
FILTER
(FWD)
(BKWD)
(FWD)(BKWD)
(R)
(L)
SWG
PRKG BK
CONTROL
2 SPEED
TRAVEL
CONTROL
MU
BLCV-Dr
BLCV-Pi
HEAVY LIFT
SOL
BOOM REGEN
REPRV
STICK IN
REPRV
BOOM DOWN
REPRV (S1)
NFC2 LIMIT
EPRV
NFC1 LIMIT
EPRV
ATT STEM 2
RETRACT EPRV
ATT STEM 1
RETRACT EPRV
ATT
STEM 2
EXT EPRV
ATT
STEM 1
EXT EPRV
TRAVEL SPEED
CHANGE SOL
SWING BREAK
SOL
HYD LOCK
SOL
SWING PRIORITY
VALVE
(18) SENSOR GP
PRESSURE
(BOOM DOWN CTRL)
338-6970
(20) SENSOR GP
PRESSURE
(BOOM UP CTRL)
338-6970
(25) SENSOR GP
PRESSURE
(STICK IN CTRL)
338-6970
(27) SENSOR GP
PRESSURE
(SWING CTRL)
338-6970
(29) SWITCH AS
PRESSURE
(LEFT TRAVEL)
319-4407
310-0107
(37) VALVE GP
PUMP CONTROL
(21) SENSOR GP
PRESSURE
(NEGATIVE FLOW CONTROL)
338-6970
(19) SENSOR GP
PRESSURE
(BOOM, ROD END)
338-6971
(46) SENSOR GP
PRESSURE
(BOOM, HEAD END)
338-6971
(4) BOOM CYLINDER
358-8439
(6) STICK CYLINDER
358-8461
(5) BUCKET CYLINDER
358-8482
(50) VALVE GP
LOAD CONTROL
(BOOM CYLINDER RH)
352-7143
(49) VALVE GP
LOAD CONTROL
(BOOM CYLINDER LH)
352-7143
(52) VALVE GP
MANUAL
(BOOM LOWER)
335-0512
(45) PLATE
259-7504
BOOM DOWN ELE
CHECK SOL (EC2)
BOOM UP ELE
CHECK SOL (EC2)
(48) VALVE GP
CHECK
(BOOM FLOAT UP)
297-0371
ATT LINE 2
RERV
STRAIGHT TRAVEL
SOL
335-0223
(44) MANIFOLD GP
CTRL AND SOLENOID
BOOM / STICK
REGENERATION
(33) VALVE GP
CHECK
352-7071
(34) VALVE GP
CHECK (RETURN)
352-7671
(40) VALVE GP
STICK DRIFT REDUCTION
352-7016
(43) BLOCK GP
323-7560
(51) VALVE GP
MAIN CONTROL
(HEAVY LIFT)
323-7658
(54) VALVE GP
SOLENOID
(WORK TOOL)
(4-FUNCTION)
259-7429
(38) VALVE GP
PRESSURE REDUCING
(BOOM PRIORITY)
148-6218
(53) VALVE GP
SHUTTLE
8J-6875
(47) SENSOR GP
PRESSURE (SQUEEZE)
338-6971
(23) SENSOR GP
PRESSURE
(OVERLOAD WARNING)
338-6971
(24) SENSOR GP
PRESSURE
(OVERLOAD WARNING)
338-6971
AL2BL2
BR4 BP2
BR3AR3 SP2BL3
T
OUT
PC
IN
TP
TT
TRAVEL (L)
TRAVEL (R)
(FWD)
(BKWD)
(FWD)
(BKWD)
T1
T5
T2
T4
T6
T3
Ps2
Pi2
D1
Ps1
B1
Dr1
Psv
a3
A4
D0
A1
A2
A3
A4
B4
B3
B2
B1
DR6
T-OUT1
DR5
Pi2
DR4
DR3
P2
PSA2
DR1
PSA1
DR2
T-OUT2
Pi1
(OUT) (IN) (R)
(L)
(CLOSE)(OPEN)
(DOWN) (UP)
JLP
JLT
JRP
JRT
BOOM
BUCKET
STICK
SWING
JL1
JL3
JL2
JL4
JR4
JR2
JR3
JR1
P
T
PG
PAC
1
1
2
2
3
3
4
4
5
5
6
6
P1
P2
A1
A2
(EXT)
(EXT)
(RET)
(RET)
T
T
T
B2
B1
A2
A1
P1
A1
A2
SINGLESINGLE
DOUBLE DOUBLE
P1
P1
G
P2
P2
R
R
BF1
AF1
AUX
RETURN
Pi1
a1
a2
A1
A2
Ps
P1
BLCV-Dr
BLCV-Pi
DRAIN
FILTER
P
A
B
T
BP1
BR4
BP3
A
G
F
E
D
C
B
BRDr1
AR2
BR2
SP3
SP1
P1S
P2S
2 SPEED
TRAVEL
CONTROL
SWG
PRKG BK
CONTROL
MU
AUX
RETURN
P2
P-IN
P
SDr
R.C.V-G
aR5
bL4
aL4
aR3
bR3
aR4
bL2
aL2
bR4
bL3
aL3
SPi
bR1aR1aL1bL1
SRPi
bR5
AL4
R.C.V-G
R.C.V-B
HR
bR4 bR5
AL2BL2 BR3 AR3
aR3
bR3
aL1
bL1
aL2
bL2
AL1
BL1
aR1
bR1
BR1AR1
T
(STICK-IN)
(UP)
BOOM(2)
AL3
ST
BL3
(IN)
(OUT)
STICK(1)
(R)
(L)
SWING
(FWD)
(BKWD)
TRAVEL(L)
STR-TRAVEL
(FWD)
(BKWD)
TRAVEL(R)
(EXT)
(RET)
ATCH
(OPEN)
BUCKET
(CLOSE)
(DOWN)
(UP)
BOOM(1)
AR4
BT
(IN)
STICK(2)
(OUT)
R1
SP2
BL3
bL3
aL3
bL4 SRPi
aR5
R.C.V-B
AR5BR5
AL4
AR5
SPi
aR4
BRPi
BR5
STPi
STDr
P2 P1
HL
aR2
bR2
SDr
SWDrSRDr BRDr2
dST
aL4
bF1
aF1
BP2
(EXT)
(RET)
BR4
HPi
P1
P2
bR2aR2 bF1aF1
STPi
STDr
A1 A2 A3 A4
A5 A6
A7
A8
B1 C1 B2
B3
C2
B4
C3
B5
B6 B7
C4
B8
BRPi
HL
HR
dST
SRDr
SOL1-T
SOL1-T
BRDr2
PD-Pi
PD-Dr
PD-Pi PD-Dr
SOL2-T
SOL2-T
HPi
HL-Pi
HL-Pi
SWDr
BL1AL1 AR1 BR1
COMBINED FUNCTION - ELECTRIC CONTROL
MAIN
CONTROL
VALVE
REAR
GG
FF
DD
CC
BB
AA
56
55
54
53
47
44
VIEW ALL CALLOUTS
MAIN CONTROL VALVE
EE
51
43
40
38
34
33
26
25
11
10
1
VIEW ALL CALLOUTS
MAIN PUMP AND CONTROL VALVE
SOS
PG
B2
A2
a2
a3
a1
Do
37
22
21
7
VIEW ALL CALLOUTS

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